In order to do a good job in the safe use of electricity in rural areas, popularize the common sense of safe use of electricity, prevent electric shock accidents, and make electricity better serve people's lives and develop rural economy, the Common Sense of Safe Use of Electricity in Rural Areas is formulated.
1, electricity should be applied for, installed and maintained by an electrician, and it is not allowed to pull wires without permission.
It is everyone's responsibility to use electricity safely. Consciously abide by the rules and regulations for safe use of electricity. Low-voltage lines should be equipped with electric shock protectors, and fuses (fuses), fuses (fuses) or fuse tubes should be selected reasonably. Copper wire, aluminum wire and iron wire are strictly prohibited.
3. Don't build houses, drill wells, drill fields, pile firewood and plant trees under wires, and don't play or show movies near live equipment such as wires to prevent electric shock from injuring people or catching fire.
4, near the wire derrick, when repairing houses or cutting down trees, measures should be taken to find the line equipment that electricians may encounter, after the power failure.
5, are not allowed to be near the cable quarrying blasting, are not allowed to dig a hole near the pole earth, are not allowed to be tied to animals on the pole. Don't break the stay wire to prevent the rod from breaking.
6. Power lines, communication lines and broadcasting lines should be clearly separated. When the wire is found to be connected with other wires, you should immediately find an electrician to deal with it.
7. When hanging clothes, keep enough distance between iron wire and electric wire. Don't twist them together, and don't hang clothes on the wires.
8. Educate children not to play with electrical equipment, don't climb the transformer platform, don't fly kites or shoot birds near wires, and don't throw things at wires, porcelain bottles and transformers.
9. Don't go near the broken wire, send someone to guard it and find an electrician to deal with it quickly.
10, small water pumps, threshers and other temporary electrical equipment are not allowed to move with electricity, are not allowed to use hooks to connect electricity, and are not allowed to use broken skin lines, ground climbing lines and waist lines.
1 1, the metal shell of household electrical equipment should be properly grounded.
12, do not use unqualified lamp holders, light wires, switches, sockets and other electrical equipment. Electrical equipment should be kept clean and in good condition, and the light wire should not be too long and should not be dragged around.
13. If the branch touches the conductor, it should be dealt with by an electrician immediately.
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Second, the common sense of home safety electricity use
( 1)
1, the household power cord should not be overloaded, and the worn and aging power cord should be replaced in time to avoid accidents.
2, Ann temporary power supply to use qualified power cord. Power plugs and sockets should be safe and reliable, and damaged ones should not be used. The power cord connector should be wrapped with vinyl cloth.
3, room decoration, hidden in the wall of the power cord should be placed in a special flame retardant sheath, the cross section of the power cord should meet the load requirements.
4, in case of household appliances on fire, should first cut off the power supply, and then put out the fire.
5. It is forbidden to drill wells, set up TV antennas and fish under high and low voltage wires.
6. When using electric irons, soldering irons and other electric heating devices, you must stay away from flammable items. After use, you should cut off the power supply and unplug it to prevent accidents.
7. Power plugs and sockets should be arranged out of children's reach, and the elderly and children at home should often be explained the common sense of safe electricity use at home to enhance their self-protection ability.
8, found that the power supply is broken, whether charged or not, should be regarded as charged, should keep enough safe distance from the wire breakpoint, and timely report to the relevant departments.
9, wet hands can't touch the charged household appliances, can't use a wet cloth to wipe the household appliances in use, to repair household appliances must first stop the power supply.
Third, what is electric shock? What is the harm to human body?
When the human body touches the charged body, or the lightning discharge between the charged body and the human body, or the arc touches the human body, the current flows.
Through the human body into the earth or other conductors, forming a conductive loop, this situation is called electric shock, and the human body will be shocked.
A certain degree of injury can be divided into electric shock and electric injury according to its opening.
Electric shock refers to the current flowing through the human body, causing pain, numbness, muscle twitching and severe convulsions.
Cardiac fibrillation or respiratory arrest, even due to fatal damage to human heart, respiratory system and nervous system.
Death. Most electrocution deaths are caused by electric shock. Electric injury refers to poor contact between human body and charged body when getting an electric shock.
Part of the electric arc burns, or the electric brand of the contact part between the human body and the charged body, are melted and vaporized by the current.
Hair metal particles invade human skin, causing skin metallization. This kind of injury will leave scars on the human body, even in severe cases.
People could die. Electrical injury is usually caused by thermal effect, chemical effect or mechanical effect of current.
Electric shock and electric injury may also occur at the same time, which is common in high-voltage electric shock accidents.
4. How did the common electric shock accident happen?
There are many kinds of electric shock accidents, most of which are caused by direct contact with charged bodies or equipment failures.
Or the human body is too close to the charged body.
The human body is in direct contact with the charged body. When the human body is on the ground or other grounding conductor, and a part of the human body touches three
The electric shock accident caused by any phase of the phase conductor is called single-phase electric shock. Harm of single-phase electric shock to human body and high voltage
Low, neutral grounding mode of power grid, etc. The number of electric shocks in human body accounts for more than 95% of the total number of electric shocks, except for single phase.
In addition to electric shock, there are two stages of electric shock. Refers to the electric shock accident caused by two places of human body contacting different charged bodies at the same time. two-phase
Electric shock accidents belong to this kind of indirect electric shock accidents.
Human contact with faulty electrical equipment. Under normal circumstances, the shell of electrical equipment is not taken. But when this line
When the line fails or the insulation is damaged, when you touch the casing of these leakage or live equipment, the danger of electric shock will occur. electric shock
Conditions and direct contact with charged bodies. Most electric shock accidents belong to this kind of indirect electric shock accident.
The distance from the charged body is too small. When the distance between human body and charged body is too small, it is not in contact with charged body, but
Because the insulation strength of the air is less than the electric field strength, the air breaks down and an electric shock accident may occur. Therefore, electrical safety regulations
In this process, the minimum allowable safety distance is specified for electrical equipment with different voltage levels.
Step voltage gets an electric shock. Due to the damage of external force (such as lightning and strong wind), the connection between electrical equipment and lightning rod
Location, or near the location of the broken wire, there will be a lot of diffusion current flowing into the earth, making the surrounding ground
It has different potential energy. When people step on two points on the surface with different potentials at the same time, a step voltage will be generated.
get an electric shock
5. Why are high and low voltage electric shocks dangerous?
There is no doubt that high voltage electricity will kill people. When the human body comes into contact with the high voltage conductor around 1 kV, it will
You'll get an electric shock. Therefore, there are words "high voltage danger, please do not approach" near high voltage electrical equipment. But you can't.
Therefore, it is concluded that high pressure will kill people and low pressure will not kill people.
In fact, the voltage value of the electric shock victim is only one of the decisive factors of the degree of electric shock injury.
The fatal factor is the current passing through the human body, not the voltage. Of course, the higher the voltage of the charged body that the human body contacts, the human body
When the resistance is constant, the greater the current passing through the human body, the greater the danger. But according to statistics, there are many electric shock accidents.
Most of them occurred at low voltage below 1 kV, and even at AC voltage as low as 24 volts, unfortunate accidents occurred.
This shows that there is no voltage that can be regarded as safe in harsh environment (such as standing in water or soaking wet).
Yes
The frequency of low-voltage electric shock accidents is also high because: 1, there are many people who come into contact with low-voltage electrical equipment, and these people are more than
Lack of electrical safety knowledge; 2. People don't pay enough attention to the hazards of low-voltage electricity, including equipment defects and improper operation.
Imperfect management and protection devices, etc. ; 3. The harm of low-voltage electricity has not been paid enough attention, including being easily "stuck" and unable to get rid of it.
Power supply, and high-voltage electric shock human body has the possibility of getting rid of power supply independently (commonly known as rebound).
The secondary factors affecting the degree of electric shock injury include the frequency of current, the age, body shape and health status of the person who gets an electric shock.
Wait a minute. At the same voltage, alternating current is more dangerous than direct current, and alternating current is more dangerous than high frequency current and impulse current for 25-300 cycles.
Electrostatic charge is more dangerous. Generally speaking, women and children are more dangerous than adult men when getting an electric shock. Anyone with heart disease, nervous system
Patients with systemic diseases or tuberculosis are more seriously injured by electric shock than healthy people.
6. What are the factors that determine the degree of injury of electric shock victims?
The degree of injury caused by electric shock depends on the following main factors:
1, the current flowing through the body, in mA. It depends on the applied voltage and the current in and out of the body.
Interpoint impedance of human body. The greater the current flowing through the body, the stronger the physiological reaction of the human body, and the more dangerous life is.
It's huge. The power frequency current above 20-25mA is prone to serious consequences. When the current is less than a few milliamps, the current is mainly
To cause ventricular fibrillation or suffocation, hundreds of milliamps or more of current, in addition to causing coma, the heart immediately stops beating, shout
In addition to quitting smoking, it will also leave a fatal electric injury.
2. The way the current flows through the body. The heart, lungs, central nervous system and spinal cord are all easily injured human organs.
Therefore, from the chest to the hands and feet, from the arms or back to the hands and hands, the way the current flows through the body is the most dangerous.
This opponent is also very dangerous, less dangerous to his feet. In addition, it is quite dangerous for electricity to pass through the brain, which will make people stand up.
Which is coma
3. The duration of current passing through human body is measured in milliseconds. The longer the human body is electrified, the more resistance it will sweat.
And so on, leading to an increase in current and serious consequences. On the other hand, the human heart cycle (about 750 milliseconds.
Seconds), there is a fragile period of 100 milliseconds, which is very dangerous for the electric injury period.
7. How big is the current allowed by the human body?
The human body is generally insensitive to the power frequency current below 0.5 mA. Experimental data show that for different people.
The perceived minimum current is different, with an average of 1.0 1 mA for adult males and 0.7 mA for adult females.
One value is called the detection current. At this point, the human body will feel a slight tingling due to nerve stimulation. At the same time, different people will get an electric shock.
The maximum current that can get rid of the power supply independently is also different, with an average of 16 mA for adult males and 10.5 mA for adult females.
Ann, this value is called getting rid of current. Under normal circumstances, the power frequency current is below 8- 10 mA and below 50 mA.
Direct current can be used as a safe current for human body, but it is also dangerous for these currents to pass through human body for a long time. Zaizhuang
When there is a protective device to prevent electric shock, the allowable power frequency current of human body is about 30 mA, which may cause serious problems in the air.
In the case of secondary accident, the allowable power frequency current of human body should be considered as 5 mA which does not cause strong spasm.
Eight, how big is the human resistance?
When the human body touches the charged body, the human body is connected to the circuit as a circuit element. Human body impedance usually includes external
Impedance (related to the clothes, shoes and socks worn when getting an electric shock and the humidity of the body, ranging from several thousand ohms to several tens of megohms)
Wait a minute. ) and internal impedance (related to the skin impedance and internal impedance of the electrocuted person). Human body impedance is not a simple resistance, mainly
Is determined by human resistance. Human body resistance is not a fixed value.
It is generally believed that dry skin has a fairly high resistance at low voltage, about 65438+ million ohms. When the voltage is 500-
At 1000 volts, the resistance drops to 1000 ohms. The reason why the epidermis has such high resistance is that it has no capillaries.
The skin of a certain part of the finger also has a stratum corneum, and the resistance of the stratum corneum is higher, so the resistance of the skin in this part is not often rubbed.
The value is the smallest. Skin resistance is also related to the contact pressure between human body and body.
When the epidermis is damaged and the dermis is exposed, the human body's resistance is low because there are blood vessels that transport saline solution.
It is generally believed that when the arm or leg is in contact with the dermis, its resistance is about 500 ohms. So, with one hand,
The path to the other arm or from one leg to the other is equivalent to a resistance of 1000 ohm. Suppose a person uses double.
Hold the charged body tightly with both hands and stand in the puddle with both feet to form a conductive loop. At this time, the resistance of the human body is basically the internal resistance.
About 500 euros.
Nine, what measures should be taken after getting an electric shock?
The key point of electric shock first aid is to rescue quickly and correctly. Don't panic and be helpless, so people will get an electric shock.
After that, he may be unable to leave the power supply by himself due to spasm or unconsciousness, and it is urgent to get the electric shock person out of the power supply quickly.
The first step is to rescue, and then, you should quickly make a simple diagnosis of the injury, observe whether the heartbeat exists, and touch it.
Touch the aorta in the neck or groin to see if the pupils are dilated. Generally, the following conditions can be met.
Reason. 1, the patient is awake, but has symptoms such as fatigue, dizziness, palpitation, cold sweat, nausea and vomiting.
Let the patient rest quietly on the spot, and carefully escort the patient to the hospital for examination and treatment if the symptoms are serious; 2. The patient's heartbeat is still alive, but God
In case of coma, the patient should rest quietly on the spot, keep the surrounding air circulating, keep warm, and do artificial respiration and heart.
Prepare for squeezing, and immediately notify the medical department or send the patient to the hospital for emergency treatment with a stretcher; 3. If the patient is at home
In the state of "suspended animation", artificial respiration, cardiac compression or both methods should be performed immediately, and
Seek medical treatment or hospital as soon as possible, and pay special attention to first aid as soon as possible. You can't wait for the doctor to come.
On the way to the hospital, you can't stop the first aid work.
Ten, how to implement mouth-to-mouth artificial respiration?
Mouth-to-mouth artificial respiration is one of the most effective methods of artificial respiration, and people who get electric shock should be prevented quickly before implementation.
Untie the collar, coat and nepotism that hinder breathing, and take out the dentures, blood clots and vomit that fell in the mouth of the electrocuted person.
Wait, let the airway clear. Then let the electrocuted person lie on his back, with his head completely backward and his nose up. The specific operation steps are as follows
Next:
1. Hold the nostril of the electrocuted person with one hand, and pull the jaw forward with the other hand (or hold the back neck) to save the person.
After taking a deep breath, blow inward near the mouth of the person getting an electric shock, and observe whether the chest bulges together to ensure that the blowing is effective.
It takes about 2 seconds.
2, after blowing, immediately leave the mouth of the electric shock, and relax the pinched nose, let him automatically exhale, pay attention to the chest.
The recovery of the Ministry lasted about 3 seconds.
Continue to operate according to the above steps until the electrocuted person begins to breathe.
If the person who gets an electric shock is a child, you can only blow with a small mouth or don't pinch your nose to let it leak naturally to avoid alveolar rupture; such as
When the stomach of the person who gets an electric shock is fully expanded, you can gently press the upper abdomen with your hands while continuing to blow and breathe, such as
If you can't open the mouth of the electrocuted person, you can change your mouth to artificial respiration.
XI. How to use chest compressions for first aid?
Chest compressions are a first-aid method after the heart of an electric shock person stops beating, and its purpose is to force the heart to return to autonomy.
When beating and chest pressing, the person who gets an electric shock should lie in a relatively solid, flat and stable place and keep breathing.
The road is clear (mouth-to-mouth artificial respiration is specifically required), and the rescuer kneels on the patient's waist. These operations are as follows:
1. Point one hand at the lower edge of the patient's neck depression with the tip of the middle finger, press the palm of your hand on the chest, and press the other hand on it.
On the back of the hand, press the palm root hard to make the lower part of the sternum and the connected ribs sink 3-4 cm, and press the heart.
Dirty bloody battle.
2, suddenly relax after squeezing, the palm root does not have to leave the chest, relying on the elasticity of the chest to reset the sternum, which enters the heart.
The internal organs relax and the blood from the great vein returns to the heart.
Follow the above steps, continuously and rhythmically, once a second, until the lips and skin of the person get an electric shock.
The color turns rosy until the artery beats.
When chest compressions are performed, moderate force should be applied according to the rescuer's weight and shoulder muscles, and there should be a certain impact force.
Not too slow, but not too hard. If the person who gets an electric shock is a child, you can pinch it with one hand, which is lighter.
In order to avoid damaging the sternum, it is advisable to squeeze 100 times per minute.
Twelve, how to correctly use the socket and live electrical appliances?
Mobile appliances with metal shell should use three-core plastic sheath line or three-eye socket and three-pin plug.
When using electrical appliances, plug in the power plug first and then turn on the power switch. After use, first turn off the electrical switch, and then
When unplugging the power plug, hold the plug insulator by hand, and don't pull the wire hard. Wet hands. no
When touching live equipment, don't wipe it with a wet cloth, and don't hang a wet handkerchief on the electric fan cover to dry.
When cooking in an electric wok, use a spatula with a wooden handle or a plastic handle.
When using an electric iron, don't use it with other household appliances, especially high-power appliances such as rice cookers, electric ovens and electrical appliances.
Heater, refrigerator, washing machine, etc. At the same time, sockets are used to prevent fire caused by line overload.
When using household appliances such as hair dryer and electric comb, unplug the power plug immediately after use to avoid being forgotten for a long time.
Working long hours, accidents due to high temperature.
Be sure to install the grounding wire. Please do not connect the ground wire to the following locations:
First, the tap water pipeline (unreliable grounding)
B, gas pipeline (in danger of fire or explosion)
After the home appliance has been running for a period of time, I want to know whether the device shell is hot, so I can't touch the outside of the device with my palm.
You should touch the shell lightly with the back of your hand, so that even if the shell leaks electricity, it can be easily and quickly separated from the power supply.
Copper wire, iron wire and aluminum wire shall not be used as fuses instead of lead-tin fuses, and the fuse specifications shall meet the requirements.
Beg. When electrical equipment is on fire, it is impossible to determine the cause at the moment. Don't pull the plug and switch knife by hand, cut off the power first.
Put out the fire again
Thirteen, the judgment and treatment of household plug-in fever.
In daily life, when many families use plug wire, they sometimes encounter the situation of rubber fever or thread fever.
There are old lines and new lines, the main reasons are as follows:
1, poor contact between plug and socket, coupled with high load power, leads to heating of plug wire. Such as an electric kettle,
Electric iron, etc.
2. The internal thread of the new plug is loose, which is caused by the rough production process and other reasons.
3. After long-term use, the insulation performance of the new plug wire decreases (or the plug wire is loose).
Solution: When you buy a new plug wire, you might as well disassemble the plug and tighten the internal thread (note that the thread cannot
Short circuit), the old plug wire is seriously hot, if it is not loose, it should be replaced with a new one.
Fourteen, home safety electricity "ten to ten don't"
1. If you want to use high-power household appliances (such as air conditioners), you must first apply to the power supply department for installation and expansion, and you cannot install them privately.
Add electrical appliances to the original line.
2. Choose reasonable electrical appliances, and don't use unqualified electrical appliances for cheap.
3. We should strictly select and use electrical appliances with appropriate wire sections, and do not blindly increase the usage of electrical appliances to make electricity.
The line is overloaded.
4. Choose a fuse suitable for wire load, and don't replace it with thick copper wire at will.
5. Connect the phase line (also called live line) to the switch, and don't use "one line in one place".
6, according to the provisions, use the metal shell of grounding appliances for grounding protection, and don't forget to use three-wire sockets and plugs.
Head and mounting switch.
7. Remember to turn on the power switch before replacing the fuse or repairing the electrical appliance.
8. The outdoor antenna of the TV set should be installed firmly and reliably, not higher than the nearby lightning rod and not close to the high-voltage line.
9. Cut off the power supply of electric irons, hair dryers, electric stoves and other appliances in time after use, and don't leave them unattended.
Use this electrical appliance in the case of ...
10, take care of public wires, and don't fly kites near overhead lines.
Fourteen, there are "four taboos" in the use of household appliances in summer.
It is hot in summer, and household appliances are used intensively and frequently. Household appliances will be damaged if they are reused improperly. Therefore,
There are four taboos in the use of household appliances: First, avoid placing household appliances in direct sunlight or in dark corners that are not suitable for heat dissipation, especially
It is a durable appliance such as refrigerator and color TV. When the temperature is high in summer, household appliances should be placed in a ventilated place to form good air around them.
The air convection environment is conducive to the timely heat dissipation of household appliances. Second, avoid starting household appliances frequently. If you often start household appliances, let household appliances
Working under high current for a long time will inevitably lead to internal overheating, plus the hot weather outside, which is easy to be damaged.
Household appliances shorten their service life. Three, avoid using it for a long time. The use of household appliances should also be "combined with rest", such as making household appliances full of burdens.
Load, even overload operation, will accelerate the shortening of its service life. Avoid voltage instability, too high and too low voltage,
Frequent power outages will damage electrical appliances, especially high-end household appliances such as air conditioners, refrigerators, microwave ovens and stereos.
When it is stable, it is easy to damage the electrical host and shorten the service life.
Fifteen, household air conditioning installation "five must"
1, the installation height must be reasonable. The installation height of outdoor unit of split wall-mounted air conditioner should be lower than that of indoor unit to make it low.
Fluorine in the pressure pipeline can be sucked back to the compressor smoothly. The height of the outdoor unit from the ground should be greater than 2.5m, so as not to affect the room.
The activities of outsiders.
2, the installation position must be conducive to air circulation. The distance between the front end of outdoor fan and the building should be greater than 1.5.
The air inlets at the back and side of the machine should also be more than 30 cm away from the wall, and the air inlets at both sides of the window air conditioner.
The hole is outside, don't block the air intake.
3. The discharge of condensed water must be unimpeded. The pipe leading to the outdoor of split air conditioner should be led obliquely downwards. Window machine in
When installing, the indoor unit should also be tilted 1-2 cm, otherwise the indoor unit will leak water in use.
4, refrigeration heat pipe connection must be close. In addition to using soap to detect leaks, we should also carefully observe that it is
Whether there is oil pollution. If there is, it means there is a leak in this place, so it should be tightened again. Should the pipes of split air conditioners be short?
Appropriate length, too long pipeline will affect the refrigeration effect. There should be no dead folds at the bend of copper pipe to ensure the smooth flow of refrigerant.
5. The safety factor of auxiliary electrical equipment must be reliable. In order to ensure the safe operation of the air conditioner, it should be installed in accordance with.
According to the requirements specified in the manual, wires and sockets should be provided, and the selection of fuses should also be adapted to avoid electricity.
Gas fire accident.
The installation and use of window air conditioner must install qualified grounding wire or use high-quality leakage protector to ensure users' use.
Personal safety.
Sixteen, what is electrical safety?
With the wide application of electric power, electrical equipment has been widely used in all walks of life. If electrical equipment is installed
Improper and unreasonable use and untimely maintenance, especially the lack of necessary electrical safety knowledge by electrical workers.
Knowledge will not only waste electric energy, but also cause electrical accidents, endanger personal safety and bring a heavy burden to the country and mankind.
Great loss. In fact, in machinery, chemical industry, metallurgy and other industrial and mining enterprises, there are a lot of unsafe electricity consumption phenomena, electrical affairs
Therefore, it has become an important cause of casualties, explosions and fire accidents. Therefore, more and more attention has been paid to electrical safety.
Pay attention and attention.
Electrical safety mainly includes personal safety and equipment safety. Personal safety refers to work and electrical equipment.
Personnel safety during operation and use; Equipment safety refers to the safety of electrical equipment and other related equipment and buildings.
Electrical accidents are often not caused by a single cause. In order to do a good job in electrical safety, including technology must be adopted.
And organizational management. With the progress of science and technology, all countries are actively studying and introducing advanced electric power.
Safety technology, improve and revise the technical standards and regulations of electrical safety, which is very important to protect the safety and health of workers.
It is very important to protect the safety of electrical equipment.
Seventeen, what is the safe voltage standard?
Safe voltage is to prevent electric shock accidents by using specific power supply voltage series. Its power supply voltage is transmitted.
Isolated from input circuits and other electrical systems. Upper limit of this voltage series during normal and fault.
In any case, the effective value of AC (50-500 Hz) between any two conductors and the ground shall not exceed 50 volts.
According to the characteristics of the site, people can adopt the safe voltage grades of alternating current specified in safe voltage standard of China: 1 and 42.
In places where there is danger of electric shock, hand-held electric tools can use volts (the upper limit of no-load is less than or equal to 50 volts).
Use; 2, 36 volts (no-load upper limit is less than or equal to 43 volts), can be used in mines, conductive dust and other places.
Use in occasions; 3, 24 volts, 12 volts, 6 volts (no-load upper limit is less than or equal to 29 volts, 15 volts, 8 volts respectively).
It can be used for some charged bodies that the human body may accidentally touch. Working in large boilers and metal containers.
Or work in the transmitter, in order to ensure personal safety, you must use 12 volts or 6 volts low-voltage running lights. When electrical equipment is used
When safe voltage exceeding 24 volts is used, measures must be taken to prevent direct contact with charged bodies. Its circuit must be insulated from the earth.
Safe voltage is determined according to the product of human allowable current and human resistance.
18. What should I pay attention to in electrical decoration during house decoration?
Nowadays, many new houses and some families with old houses always pay attention to the interior of the house in order to live comfortably.
Redecorate. Among them, electrical decoration, such as indoor circuit wiring, switch socket layout, chandelier, ceiling fan installation.
In order to pursue beauty and save materials, it was not installed according to the relevant device regulations, so it was buried.
Hidden dangers of accidents. Now I will introduce the matters needing attention and related requirements to you to ensure your electricity safety.
1, you should ask an electrician who has passed the examination and has an electrician certificate to carry out electrical decoration for you.
2. The electrical materials used must be qualified products, such as wires, switches, sockets, leakage switches, lamps, etc.
Wait a minute.
3, the specific decoration, should do:
(1) Be sure to install a distribution box with a leakage switch at the incoming line of your home. Because of leakage current
Off, once the home leakage occurs, such as electrical shell charged, personal electric shock, etc. The leakage switch will trip, thus ensuring that
The witness is safe.
(2) When wiring indoors, the socket circuit and the lighting circuit should be wired separately, and the socket circuit should be no less than 2.5 flat.
One square millimeter of single-stranded insulated copper wire, and the lighting circuit should be made of single-stranded insulated copper wire not less than 1.5 square millimeter, which is generally acceptable.
Use plastic sheath line.
(3) When wiring, the plastic sheath line or other insulated wires used shall not be directly buried in cement or stone.
Inside the plaster layer. Because the wires buried directly in the wall are "dead" in the wall, they cannot be mailed or unplugged. Once a certain part of the line
If the road is damaged and needs to be replaced, the wall can only be cut open and rewired. There can be no connectors in the middle when changing wires, because they are connected together.
The head is directly buried in the wall, and with the passage of time, the insulating tape at the joint will age, resulting in long-term burial in the wall.
Leak. In addition, the wiring of most families will not be constructed according to the drawings, and accurate wiring drawings will not be saved.
When you put a wooden pillow on the wall of your home and nail a nail, if you don't pay attention, you may damage the wire directly buried in the wall, or even nail it.
Nailing through the wire will cause short circuit, the fuse will be blown when it is light, and the spark generated during short circuit will burn people and even cause fire.
If the nail is only nailed on the phase line, the nail is charged and people stand on the ground, it is very likely to get an electric shock accident. place
So we have to bury it through pipes.
(4) The installation height of the socket is generally1.3m from the ground, and the minimum is not less than 0.15m. It is correct when connecting the socket.
Single-phase two-hole socket, the left hole facing the socket is connected to the working zero line, the right hole is connected to the phase line, and the upper hole is connected to the zero line trunk line or grounding line.
The forbidden upper hole and the left hole are connected by wires.
(5) The installation height of the wall switch is generally not less than 1.3m from the ground and 0. 15-0.2m from the door frame.
The wiring of the switch shall be connected to the phase line of the controlled lamps or appliances.
(6) When the ceiling fan is installed, the height of the fan blade from the ground should not be less than 2.5 meters. When the chandelier is installed, the weight of the lamp is 1kg.
In the following cases, the flexible cord can be used for self-lifting. However, the cord must be tied at the hanging box and the lamp holder, and the weight of the lamp is too heavy.
When passing through 1kg, chain slings, hooks, etc. Should be used, the upper end of the bolt should be connected with the embedded parts of the building, and the wires should not be stressed.